package com.fart.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.fart.common.R;
import com.fart.domain.Category;
import com.fart.service.CategoryService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.List;
import java.util.UUID;

@RestController
@RequestMapping("/common")
@Slf4j
public class CommonController {

    @Autowired
    private CategoryService categoryService;

    @Value("${health.path}")
    private String basePath;

    @PostMapping("/upload")
    public R<String> upload(MultipartFile file) {
        log.info("file:{}", file);
        String originalFilename = file.getOriginalFilename();
        System.out.println(originalFilename);
        String suffix = originalFilename.substring(originalFilename.lastIndexOf("."));
        System.out.println(suffix);
        String fileName = UUID.randomUUID().toString() + suffix;

        File dir = new File(basePath);
        if (dir.exists()) {
            dir.mkdir();
        }
        try {
            file.transferTo(new File(basePath + fileName));
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
        return R.success(fileName);
    }

    @GetMapping("/download")
    public void download(HttpServletResponse response,String name){
        log.info("name:{}",name);
        try {
            FileInputStream fileInputStream = new FileInputStream(basePath + name);
            ServletOutputStream outputStream = response.getOutputStream();
            response.setContentType("image/jpeg");
            int len;
            byte[] bs = new byte[1024];
            while ((len = fileInputStream.read(bs)) != -1){
                outputStream.write(bs,0,len);
            }
            outputStream.close();
        }catch (FileNotFoundException e) {
            throw new RuntimeException(e);
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }

}